Florence Makumene held a plastic container of HIV medication and wondered if it would be her last as fears swelled of a return to a time decades ago when millions across sub-Saharan Africa died of AIDS.

The freeze on U.S. foreign aid ordered by President Donald Trump has effectively halted one of the world's most successful responses to a disease. For two decades, the American people have paid for the President's Emergency Plan for AIDS Relief,

South African lab technician Nozipho Mlotshwa was waiting for the test results for a potential HIV vaccine, which has eluded scientists for decades, when the order came from USAID to stop work.

At a rural village in South Africa's KwaZulu-Natal province, unemployed 19-year-old Nozuko Majola is trying to figure out if she has enough money for the one-hour ride to collect her much-needed HIV medication,

South African lab technician Nozipho Mlotshwa was waiting for the test results for a potential HIV vaccine, which has eluded scientists for decades, when the order came from USAID to stop work. The first round of vaccines she and her colleagues made in Johannesburg had produced an immune response in rabbits,